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Fingerprint using sweat could solve decade old crimes

Fingerprint using sweat could solve decade old crimes

Researchers in Seoul, University (South Korea) discover a decade old crime solver by only using sweat fingerprint. Many a crime has been solved via fingerprints. But those unique traces of a person's fingertip fade over time. And forensic scientists need pretty much an entire fingerprint to get enough lines to make an accurate identification. Now researchers have a more reliable way of fingerprinting with less of a print: By mapping the tiny sweat pores on a person's finger. Each of the ridges on a person's fingertip is lined with pores. Scientists have known for a century that these tiny holes secrete titty bitty dots of sweat, and that therefore the sweat marks could map an individual fingerprint. But before now there hasn't been a way to easily analyze such sweat-prints. It's the only such polymer that responds to plan old water. Plus it's cheap and easy to use: The polymer can be loaded into an inkjet cartridge and printed on pieces of plastic for quick and easy fingerprinting. And with so many unique data points to work with, it takes a fraction of a fingerprint to make an accurate match. Source discovery magazine